Carbidopa Tablets and Namenda

• Generic Name: carbidopa
• Dosage Forms: tablet
• Other Brand Names: Lodosyn

Carbidopa is used with another medicine called levodopa to treat the symptoms of Parkinson's disease (stiffness, tremors, spasms, poor muscle control). Symptoms of Parkinson's disease may be caused by low levels of a chemical called dopamine (DOE pa meen) in the brain.

Levodopa is converted to dopamine in the brain. Carbidopa helps prevent the breakdown of levodopa before it can reach the brain and take effect.

Carbidopa is only used in combination with levodopa. Carbidopa has no effect when used alone.

Carbidopa is also used with levodopa to treat muscle symptoms similar to Parkinson's disease that are caused by certain drugs such as chlorpromazine (Thorazine), fluphenazine (Prolixin), perphenazine (Trilafon), and others.

Carbidopa may also be used for purposes not listed in this medication guide.

• Generic Name: memantine
• Dosage Forms: tablet, oral solution
• Other Brand Names: Namenda, Namenda XR

Namenda (memantine) reduces the actions of chemicals in the brain that may contribute to the symptoms of Alzheimer's disease.

Namenda is used to treat moderate to severe dementia of the Alzheimer's type.

Namenda may also be used for purposes not listed in this medication guide.